/**
 * Copyright (c) 2016-2019 人人开源 All rights reserved.
 *
 * https://www.renren.io
 *
 * 版权所有，侵权必究！
 */

package com.atguigu.common.utils;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.exception.BizCodeEnum;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.EqualsAndHashCode;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpStatus;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

/**
 * 返回数据
 *
 * @author Mark sunlightcs@gmail.com
 */
@EqualsAndHashCode(callSuper = true)
@Slf4j
public class R<T> extends HashMap<String, Object> {
	private static final long serialVersionUID = 1L;

	private T data;

	public <T> T getData(String key, TypeReference<T> typeReference) {
		Object data = get(key);
		String jsonString = JSON.toJSONString(data);
		return JSON.parseObject(jsonString, typeReference);
	}

	public <T> T getData(TypeReference<T> typeReference, String paramName) {
		return JSON.parseObject(JSON.toJSONString(super.get(paramName)), typeReference);
	}

	public <T> T getDataJackson(com.fasterxml.jackson.core.type.TypeReference<T> typeReference, String paramName) {
		try {
			ObjectMapper mapper = new ObjectMapper();
			return mapper.readValue(JSON.toJSONString(super.get(paramName)), typeReference);
		} catch (IOException e) {
			log.error("Json 解析 失败：{}", e.getMessage());
		}
		return null;
	}


	public static <T> R<T> data(T data) {
		R<T> r = new R<>();
		r.put("code", 0);
		r.put("msg", "success");
		r.put("data", data);
		r.setData(data);
		return r;
	}

	public Object getData() {
		return super.get("data");
	}

	public void setData(T data) {
		this.data = data;
	}

	public R() {
		put("code", 0);
		put("msg", "success");
	}
	
	public static R error() {
		return error(HttpStatus.SC_INTERNAL_SERVER_ERROR, "未知异常，请联系管理员");
	}
	
	public static R error(String msg) {
		return error(HttpStatus.SC_INTERNAL_SERVER_ERROR, msg);
	}
	
	public static R error(int code, String msg) {
		R r = new R();
		r.put("code", code);
		r.put("msg", msg);
		return r;
	}

	public static R error(BizCodeEnum bizCodeEnum) {
		R r = new R();
		r.put("code", bizCodeEnum.getCode());
		r.put("msg", bizCodeEnum.getMessage());
		return r;
	}

	public static R ok(String msg) {
		R r = new R();
		r.put("msg", msg);
		return r;
	}
	
	public static R ok(Map<String, Object> map) {
		R r = new R();
		r.putAll(map);
		return r;
	}
	
	public static R ok() {
		return new R();
	}

	@Override
	public R put(String key, Object value) {
		super.put(key, value);
		return this;
	}

	public Integer getCode() {
		return (Integer) this.get("code");
	}
}
